Download Label and discuss the significance of the Schwann cells/myelin

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Chapter 48: Neurons, Synapses, & Signaling
Reading Guide
Name:________________________________
Period:_______ Date:___________________
Use the information in Chapter 48 (p.1045-1047) to complete the following questions.
Concept 48.1 Neuron organization and structure reflect function in information transfer
Use the diagram below to summarize how organisms with a nervous system process information.
Explain why this an example of long distance signaling.
Use Figure 48.4 (p.1047) to draw and label the basic anatomy of two communicating neurons and
explain how the propagation of an action potential progresses from one neuron to another.
Concept 48.3 Action potentials are the signals conducted by axons
Label and discuss the significance of the Schwann cells/myelin sheath and nodes of Ranvier in facilitating
cell communication between neurons.
Concept 48.4 Neurons communicate with other cells at synapses
Use the diagrams below to discuss how excitatory postsynaptic potentials (EPSP) differ from inhibitory
postsynaptic potentials (IPSP).
Complete the table below with information about the major neurotransmitters used in postsynaptic
signaling.
Neurotransmitter
Acetylcholine
GABA
Norepinephrine
Dopamine
Serotonin
Endorphins
Inhibitory Excitatory
Effect on Body